// @(#)WrapperComponent.java   9/2002
// Copyright (c) 1998-2002, Distributed Real-time Computing Lab (DRCL) 
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package drcl.comp;

/**
Component that wraps a non-component object.
The wrapped object is NOT duplicated, NOR recycled with the component.
One can also embed a {@link Handler handler} to process the incoming data for this wrapper component.
 */
public class WrapperComponent extends drcl.comp.Component implements Wrapper
{
  Handler handler = null;
  protected Object object;

  public WrapperComponent() 
  { super((String)null); }
  
  public WrapperComponent(String id_)
  { super(id_); }
  
  public Object getObject() { return object; }
  public void setObject(Object o_) { object = o_; }
  
  public Handler getHandler() { return handler; }
  public void setHandler(Handler o_) { handler = o_; }
  
  public void duplicate(Object source_)
  {
    super.duplicate(source_);
    WrapperComponent that_ = (WrapperComponent)source_;
    object = that_.object;
  }

  protected void process(Object data_, Port inPort_)
  {
    if (handler != null)
      handler.process(data_, inPort_);
  }
  
  public String info() 
  {
    return "Wrapped object: " + object 
         + (object == null? "": "(" + object.getClass().getName() + ")") + "\n"
         + "Handler: " + handler + "\n";
  }
  
}
